| OVERVIEW | |
| Introduced | February 2001 |
| Model Identifier | PowerMac4,1 |
| Model Number | M5521 |
| EMC | 1857 |
| Order Number | |
| Support | NiwTech |
| Colors | Indigo, Graphite, Blue Dalmatian, and Flower Power |
| Weight and Dimensions | 34.7 lbs., 15.0" H x 15.0" W x 17.1" D |
| PROCESSOR | |
| Processor | PowerPC 750 or 750cx (G3) |
| Processor Speed | 400, 500, 600 MHz |
| Maximum Processor Speed | |
| Architecture | |
| Number of Cores | 1 |
| Security Chip | No |
| Cache | 64 KB L1, 512 KB (400 MHz) or 256 KB (500/600 MHz) backside L2 |
| System Bus | 100 MHz |
| Logic board Repair | NiwTech |
| STORAGE AND MEDIA | |
| Storage | 10, 20, 40 GB |
| Storage Upgrade | NiwTech |
| SSD Upgrade | NiwTech |
| Data Recovery | NiwTech |
| Media | Slot-loading 24x CD-ROM or 8x4x32 CD-RW |
| PERIPHERALS | |
| Peripherals | Apple Pro Keyboard, Apple Pro Mouse |
| Peripherals Repairs | NiwTech |
| SOFTWARE | |
| Original OS | Mac OS 9.1 (Mac OS ROM 7.5.1) |
| Maximum OS | Mac OS X 10.4.11 |
| OS install | NiwTech |
| OS Upgrade | NiwTech |
| OS Downgrade | NiwTech |
| OS Support | NiwTech |
| AirDrop | |
| Handoff | |
| Power Nap | |
| Unlock with Apple Watch | |
| Hardware Test | AHT (iMac) 1.1, 1.2 (iMac/eMac) 1.2.1, 1.2.2 |
| FIRMWARE | |
| Firmware | Open Firmware |
| MEMORY | |
| Built-in Memory | None |
| Maximum Memory | 1.0 GB |
| Memory Slots | 2 - PC-100 3.3V 168-pin SDRAM |
| Memory Upgrade | NiwTech |
| Memory Upgrade Instructions | How to remove or install memory |
| Interleaving Support | No |
| DISPLAY | |
| Built-in Display | 15-inch shadow-mask CRT (13.8-inch viewable) |
| Display Glass | |
| Brightness | |
| Pixel Density | |
| Color Gamut | |
| Resolutions | 640x480 @ 117Hz, 800x600 @ 95Hz, 1024x768 @ 75Hz |
| Display Replacement | NiwTech |
| GRAPHICS | |
| Graphics Card | ATI Rage 128 Pro or Rage 128 Ultra |
| Graphics Card Replacement | NiwTech |
| Graphics Memory | 8 or 16 MB |
| Display Connection | 1 - VGA |
| Display Modes | Video mirroring only |
| External Resolution | |
| CAMERA | |
| Camera | None |
| CONNECTIONS | |
| Wi-Fi | Optional AirPort card (802.11b) (adapter required) |
| Bluetooth | None |
| Ethernet | 10/100BASE-T (RJ-45) |
| Modem | 56k |
| USB | 2 - 12 MBit/s |
| FireWire | 2 - 400 MBit/s (8W total power) |
| Thunderbolt | |
| Display | 1 - VGA |
| Infrared | None |
| Audio In | 1 - 3.5-mm analog input jack, Built-in microphone (16-bit 44.1 kHz sample rate) |
| Audio Out | 3 - 3.5-mm analog output jacks, Built-in speakers (16-bit 44.1 kHz sample rate) |
| Security Slot | 1 - Kensington cable lock |
| EXPANSION | |
| Slots | |
| Bays | None |
| Hard Drive Interface | Ultra ATA (Shared with optical drive) |
| Optical Drive Interface | Ultra ATA (Shared with hard disk drive) |
| SENSORS | |
| Liquid Sensor | Non |
| POWER | |
| Backup Battery | 3.6 V 850 mAh lithium (922-4028) |
| Maximum Continuous Power | 150 W |
| Line Voltage | 100-260V AC |
| Power Supply Replacement | NiwTech |
| ENVIRONMENTAL | |
| Acoustical Performance | |
| Power Consumption | |
| ENERGY STAR | U.S. EPA ENERGY STAR compliant |
| EPEAT | |
| NiwTech | www.niwtech.com |
